code: def get_wb(self, dst=None):
      return self.aggregator.wb.get_plain_text(
          dst=dst, group=self.group
      )
  
imports: import typing
  from typing import Any, Iterator
  import torch
  from torch.nn import Parameter
  from fate.arch.context import Context
  from fate.arch.protocol.mpc.common.encoding import IgnoreEncodings
  from fate.arch.protocol.mpc.mpc import FixedPointEncoder
  from fate.arch.trace import auto_trace
label_desc: Use image node_id 5 for calling the SSHENeuralNetworkAggregatorLayer obj's underlying member method code with example usage: obj.get_wb(dst) and returns: self